128 



-tlie fish, and less than one-third its entire length. Caudal 

 fin broad, nearly straight at its termination. Olive above; 

 sides lighter; lower portion of ojDercles silvery; throat and 

 hack portion of abdomen bluish-grey. The body is trans- 

 versely marked with numerous bluish bands, (about fifteen) 

 and dotted with darker minute points. Length, 2 to 3 inches. 



Fin-rays— D. 13—14; P. 18; V. 5; A. 12—13; C. 16. 



F. multifasciatus, Guenther^ III, j). 324. 



Hydrargyra multifasciatus, Lesueur. Journ. Ac. Nat. Sc. 

 Philad. I, 1817, p. 131. 



Fundulus multifasciatus, Cuv. & Yal. XVIII, p. 200: Cope, 

 Proc. Acad. Nat. Sc. Philad. 1865, p. 78. 



Was formerly very common in the region of black marsh 

 around the Patapsco Eiver. The chemical manufacturies 

 having polluted the waters, many of these fish have died out, 

 and their extermination seems imminent. 



Acad. Coll. 



HYDRARGYRA, Lac. 



Bull-Minnow, or Striped lillifish. 



Body elongated, slightly convex on the dorsum over the 

 pectorals in the female, nearly straight in the male. Greatest 

 depth of the body, which is across the pectorals, less than the 

 length of the head; the latter, wliich is equal in length to 

 one-fourth of the entire length of the fish, is compressed 

 above. Female yellowish-green above, lighter upon the sides, 

 white beneath; several longitudinal, interrupted, black bands 

 (sometimes five, sometimes not more than one or two), extend 

 from the gill-covers to the tail. At base of tail three or more 

 less distinct transverse bands. Male with greenish-black 

 sides and back; sides crossed by numerous, slate-colored, 

 nearly black, transverse bands. Lower portion of sides, and 

 abdomen, yellowish-green. Dorsal fin with a black roundish 

 spot, before which — in larger sj)ecimens — are three or four 

 broken, dark-colored blotches. The orange-colored caudal 

 fin is margined with black. Length, 3 to 7 inches. 



Fin-rays:— D. 14—16; P. 16—18; V. 6; A. 11—12; C. 

 18—20. ' 



Esoxjlavulus, Mitch. Lit. & Phil. Trans. New York, I, 

 p. 439, pi. 4, fig. 8, 



Cyprinodon favulus, Valenc. in Humb. Obs. Zool. I, p. 

 164; pi. 32, figs. 3, 6 & 7. 



